[GHC] #2510: Environment modification during installation should be optional

[GHC]

#2510: Environment modification during installation should be optional
--------------------------------+-------------------------------------------
    Reporter:  nimnul           |       Owner:         
        Type:  feature request  |      Status:  new    
    Priority:  normal           |   Component:  None   
     Version:  6.8.3            |    Severity:  normal 
    Keywords:                   |    Testcase:         
Architecture:  Unknown          |          Os:  Unknown
--------------------------------+-------------------------------------------
 Actual behaviour:

 GHC 6.8.3 Installer adds GHC to the PATH environment variable of the user
 who started the installer

 Expected behaviour:

 The installer should prompt a user whether to modify the environment at
 all

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2510>
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